20012331132 has 18 divisors (see below), whose sum is σ = 50586726008. Its totient is φ = 6670777032.

The previous prime is 20012331121. The next prime is 20012331151. The reversal of 20012331132 is 23113321002.

20012331132 is a `hidden beast` number, since 200 + 1 + 2 + 331 + 132 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277949008 + ... + 277949079.

Almost surely, 2^20012331132 is an apocalyptic number.

It is an amenable number.

20012331132 is an abundant number, since it is smaller than the sum of its proper divisors (30574394876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20012331132 is a wasteful number, since it uses less digits than its factorization.

20012331132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555898097 (or 555898092 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20012331132 its reverse (23113321002), we get a palindrome (43125652134).

The spelling of 20012331132 in words is "twenty billion, twelve million, three hundred thirty-one thousand, one hundred thirty-two".